Vaico V30-8404 Engine Coolant Reservoir

Engine Coolant Reservoir for Mercedes-Benz R-Class

The Vaico V30-8404 engine coolant reservoir is an OE-style replacement for select Mercedes-Benz R-Class applications. Built to match the listed dimensions and pressure rating, it supports proper coolant expansion and recovery in the cooling system.

VAICO Expert Kits+ groups the needed components into one box for a more complete repair approach. This V30-8404 coolant reservoir is supplied with a lid and is specified for Mercedes-Benz R350, R320, R550, R500, and R63 AMG models in the listed years.

Key Features

• Engine coolant reservoir for Mercedes-Benz cooling system service
• Vaico V30-8404 OE-style replacement part
• Includes lid
• Pressure rating: 2 bar
• Dimensions: 228 mm height, 226 mm length, 238 mm width
• VAICO Expert Kits+ packaging for a complete repair-focused solution

Detailed Description

The Vaico V30-8404 coolant expansion tank is engineered for vehicles that require OE No. 2515000049. It is listed for Mercedes-Benz R350, R320, R550, R500, and R63 AMG applications, making it a direct-fit service part for select R-Class cooling system repairs. The reservoir’s 2 bar pressure specification and included lid help maintain the cooling system’s expansion and recovery function under normal operating conditions.

VAICO’s Expert Kits+ product line focuses on supplying the needed parts in one package, which helps streamline cooling system maintenance on the Mercedes-Benz R350 and related R-Class models. The V30-8404 part number is also referenced against 251 500 00 49 KIT and A2515000049 for cross-checking during parts lookup.

What This Part Helps Address

• Cracked or leaking coolant reservoir housing
• Damaged reservoir lid or sealing issues
• Coolant loss from expansion tank failure
• Cooling system pressure retention problems
• Warning lights or service concerns tied to low coolant level

Installation Notes and Tips

• Verify OE number 2515000049 before ordering.
• Confirm reservoir dimensions and pressure rating match the original unit.
• Inspect hoses, clamps, and sensor connections during replacement.
• Bleed the cooling system after installation to remove trapped air.
• Check for leaks and proper coolant level after the engine reaches operating temperature.

Quality Assurance

VAICO Expert Kits+ is organized to supply the required parts for the repair in one box, and this reservoir is specified with the correct lid and pressure rating for the listed Mercedes-Benz applications. Use the part number V30-8404 to confirm fitment against your vehicle’s OE reference before installation.